[llvm] [AMX] Error out when AMX DP instructions use same registers (PR #97686)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `sanitizer-x86_64-linux` running on `sanitizer-buildbot1` while building `llvm` at step 2 "annotate".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/66/builds/1016

Here is the relevant piece of the build log for the reference:
```
Step 2 (annotate) failure: 'python ../sanitizer_buildbot/sanitizers/zorg/buildbot/builders/sanitizers/buildbot_selector.py' (failure)
...
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-Wthread-safety', '-Wthread-safety-reference', '-Wthread-safety-beta', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 9980 tests, 80 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..
TIMEOUT: SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c (9980 of 9980)
******************** TEST 'SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c' FAILED ********************
Exit Code: -9
Timeout: Reached timeout of 900 seconds

Command Output (stderr):
--
RUN: at line 1: /b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang  -gline-tables-only -fsanitize=hwaddress -fuse-ld=lld -fsanitize-hwaddress-experimental-aliasing  -m64 -funwind-tables  -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test -ldl -O0 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /b/sanitizer-x86_64-linux/build/build_symbolizer/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp && env HWASAN_OPTIONS=die_after_fork=0  /b/sanitizer-x86_64-linux/build/build_symbolizer/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ /b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang -gline-tables-only -fsanitize=hwaddress -fuse-ld=lld -fsanitize-hwaddress-experimental-aliasing -m64 -funwind-tables -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test -ldl -O0 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /b/sanitizer-x86_64-linux/build/build_symbolizer/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ env HWASAN_OPTIONS=die_after_fork=0 /b/sanitizer-x86_64-linux/build/build_symbolizer/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
==696841==ERROR: HWAddressSanitizer: invalid-free on address 0x680200000020 at pc 0x55e5371e1029 on thread T0
tags: 07/04 (ptr/mem)

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..

64 warning(s) in tests
Slowest Tests:
--------------------------------------------------------------------------
900.07s: SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c
180.15s: ThreadSanitizer-x86_64 :: bench_threads.cpp
87.94s: libFuzzer-i386-static-libcxx-Linux :: value-profile-switch.test
86.82s: libFuzzer-i386-libcxx-Linux :: value-profile-switch.test
85.99s: ThreadSanitizer-x86_64 :: signal_thread.cpp
82.28s: libFuzzer-i386-default-Linux :: value-profile-switch.test
79.53s: libFuzzer-x86_64-libcxx-Linux :: out-of-process-fuzz.test
79.18s: libFuzzer-x86_64-default-Linux :: out-of-process-fuzz.test
79.11s: libFuzzer-x86_64-static-libcxx-Linux :: out-of-process-fuzz.test
69.62s: libFuzzer-i386-libcxx-Linux :: disable-leaks.test
68.64s: libFuzzer-i386-default-Linux :: disable-leaks.test
67.69s: libFuzzer-i386-static-libcxx-Linux :: disable-leaks.test
53.15s: ThreadSanitizer-x86_64 :: restore_stack.cpp
49.00s: libFuzzer-i386-libcxx-Linux :: fork.test
48.24s: libFuzzer-i386-static-libcxx-Linux :: fork.test
47.99s: libFuzzer-i386-default-Linux :: fork.test
46.94s: libFuzzer-x86_64-libcxx-Linux :: disable-leaks.test
46.70s: libFuzzer-i386-libcxx-Linux :: fork_corpus_groups.test
45.94s: libFuzzer-i386-default-Linux :: fork_corpus_groups.test
Step 11 (test compiler-rt symbolizer) failure: test compiler-rt symbolizer (failure)
...
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-Wthread-safety', '-Wthread-safety-reference', '-Wthread-safety-beta', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/lit.common.cfg.py:60: warning: Path reported by clang does not exist: "/b/sanitizer-x86_64-linux/build/build_symbolizer/lib/clang/19/lib/x86_64-unknown-linux-gnu". This path was found by running ['/b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang', '--target=x86_64-unknown-linux-gnu', '-m64', '-print-runtime-dir'].
llvm-lit: /b/sanitizer-x86_64-linux/build/llvm-project/llvm/utils/lit/lit/main.py:72: note: The test suite configuration requested an individual test timeout of 0 seconds but a timeout of 900 seconds was requested on the command line. Forcing timeout to be 900 seconds.
-- Testing: 9980 tests, 80 workers --
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..
TIMEOUT: SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c (9980 of 9980)
******************** TEST 'SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c' FAILED ********************
Exit Code: -9
Timeout: Reached timeout of 900 seconds

Command Output (stderr):
--
RUN: at line 1: /b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang  -gline-tables-only -fsanitize=hwaddress -fuse-ld=lld -fsanitize-hwaddress-experimental-aliasing  -m64 -funwind-tables  -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test -ldl -O0 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /b/sanitizer-x86_64-linux/build/build_symbolizer/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp && env HWASAN_OPTIONS=die_after_fork=0  /b/sanitizer-x86_64-linux/build/build_symbolizer/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ /b/sanitizer-x86_64-linux/build/build_symbolizer/./bin/clang -gline-tables-only -fsanitize=hwaddress -fuse-ld=lld -fsanitize-hwaddress-experimental-aliasing -m64 -funwind-tables -I/b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test -ldl -O0 /b/sanitizer-x86_64-linux/build/llvm-project/compiler-rt/test/sanitizer_common/TestCases/Posix/fork_threaded.c -o /b/sanitizer-x86_64-linux/build/build_symbolizer/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
+ env HWASAN_OPTIONS=die_after_fork=0 /b/sanitizer-x86_64-linux/build/build_symbolizer/runtimes/runtimes-bins/compiler-rt/test/sanitizer_common/hwasan-x86_64-Linux/Posix/Output/fork_threaded.c.tmp
==696841==ERROR: HWAddressSanitizer: invalid-free on address 0x680200000020 at pc 0x55e5371e1029 on thread T0
tags: 07/04 (ptr/mem)

--

********************
Testing:  0.. 10.. 20.. 30.. 40.. 50.. 60.. 70.. 80.. 90..

64 warning(s) in tests
Slowest Tests:
--------------------------------------------------------------------------
900.07s: SanitizerCommon-hwasan-x86_64-Linux :: Posix/fork_threaded.c
180.15s: ThreadSanitizer-x86_64 :: bench_threads.cpp
87.94s: libFuzzer-i386-static-libcxx-Linux :: value-profile-switch.test
86.82s: libFuzzer-i386-libcxx-Linux :: value-profile-switch.test
85.99s: ThreadSanitizer-x86_64 :: signal_thread.cpp
82.28s: libFuzzer-i386-default-Linux :: value-profile-switch.test
79.53s: libFuzzer-x86_64-libcxx-Linux :: out-of-process-fuzz.test
79.18s: libFuzzer-x86_64-default-Linux :: out-of-process-fuzz.test
79.11s: libFuzzer-x86_64-static-libcxx-Linux :: out-of-process-fuzz.test
69.62s: libFuzzer-i386-libcxx-Linux :: disable-leaks.test
68.64s: libFuzzer-i386-default-Linux :: disable-leaks.test
67.69s: libFuzzer-i386-static-libcxx-Linux :: disable-leaks.test
53.15s: ThreadSanitizer-x86_64 :: restore_stack.cpp
49.00s: libFuzzer-i386-libcxx-Linux :: fork.test
48.24s: libFuzzer-i386-static-libcxx-Linux :: fork.test
47.99s: libFuzzer-i386-default-Linux :: fork.test
46.94s: libFuzzer-x86_64-libcxx-Linux :: disable-leaks.test
46.70s: libFuzzer-i386-libcxx-Linux :: fork_corpus_groups.test
45.94s: libFuzzer-i386-default-Linux :: fork_corpus_groups.test

```

https://github.com/llvm/llvm-project/pull/97686